What came first the chicken or the egg scientific answer?
Eggs come from chickens and chickens come from eggs: that’s the basis of this ancient riddle. But eggs – which are just female sex cells – evolved more than a billion years ago, whereas chickens have been around for just 10,000 years.
Which existed first the chicken or the egg?
Dinosaurs laid eggs, the fish that first crawled out of the sea laid eggs, and the weird articulated monsters that swam in the warm shallow seas of the Cambrian Period 500 million years ago also laid eggs. They weren’t chicken’s eggs, but they were still eggs. So the egg definitely came first.
Where did chickens originate?
Southeast Asia
The chicken is one of the most ubiquitous domesticated animals; it is bred for both its egg and meat, and is thought to have originally been domesticated from the red junglefowl (Gallus gallus) native to multiple regions from Southeast Asia to Southwest China3,4,5.
Where did a chicken come from?
The chicken is one of the most ubiquitous domesticated animals; it is bred for both its egg and meat, and is thought to have originally been domesticated from the red junglefowl (Gallus gallus) native to multiple regions from Southeast Asia to Southwest China3,4,5.
How did eggs evolve?
The shelled amniote egg, which is familiar to many of us as chicken eggs, evolved about 325 million years ago. Among other birds, chickens evolved with shelled eggs, so the gradual transition to chickens occurred with very little change in the egg.
When did chickens first appear?
about 5,400 years ago
Chickens were likely first domesticated about 5,400 years ago in Southeast Asia, although archaeological evidence of wild chickens goes back even further, to a 12,000-year-old site in northern China.
Where did eggs originate?
According to food historians, humans have been eating eggs for about 6 million years, originally eating them raw from the nests of wild birds. Jungle birds were domesticated for egg production in India by 3200 BC, and it is thought that Ancient Egypt and Ancient China were the first societies to domesticate hens.
When was the first chicken discovered?
The earliest fossil bones identified as possibly belonging to chickens appear in sites from northeastern China dating to around 5400 B.C., but the birds’ wild ancestors never lived in those cold, dry plains.
Who came first on earth?
About 1.9 million years ago, Homo erectus evolved. This human ancestor not only walked fully upright, but had much larger brains than Homo habilis: nearly twice as large, on average.
Where did chickens first come from?
How does a hen make an egg?
How a Hen Makes an Egg. The egg is formed in the reproductive tract of a female chicken, called a hen. The reproductive tract is divided into two major parts: the ovary and the oviduct. The ovary is where the yolk is added. When the yolk reaches the right size, it is released from the ovary by a process called ovulation.
How do hens make eggs?
Eggs are formed inside the chicken every time its ovary releases a yolk into its oviduct. As the egg travels through the reproductive system of the hen, it will also develop an egg white and an eggshell. The eggs that are not fertilized are edible.
What is a hen egg?
The First Hen egg or Jeweled Hen egg is a Tsar Imperial Fabergé egg. It became the first in a series of more than 50 such jeweled eggs made under the supervision of Peter Carl Fabergé for the Russian Imperial family.